1 /*
2 * Copyright 2024 Google LLC
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "include/core/SkAlphaType.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkColor.h"
11 #include "include/core/SkFontMgr.h"
12 #include "include/core/SkFontStyle.h"
13 #include "include/core/SkImageInfo.h"
14 #include "include/core/SkPixmap.h"
15 #include "include/core/SkRefCnt.h"
16 #include "include/core/SkStream.h"
17 #include "include/core/SkSurface.h"
18 #include "include/encode/SkPngEncoder.h"
19 #include "modules/svg/include/SkSVGDOM.h"
20 #include "modules/skshaper/utils/FactoryHelpers.h"
21
22 #if defined(SK_FONTMGR_FONTCONFIG_AVAILABLE) && defined(SK_TYPEFACE_FACTORY_FREETYPE)
23 #include "include/ports/SkFontMgr_fontconfig.h"
24 #include "include/ports/SkFontScanner_FreeType.h"
25 #endif
26
27 #if defined(SK_FONTMGR_CORETEXT_AVAILABLE)
28 #include "include/ports/SkFontMgr_mac_ct.h"
29 #endif
30
31 #include <cstdio>
32
33 constexpr size_t kWidth = 450;
34 constexpr size_t kHeight = 120;
35
36 // The text in this SVG should be properly shaped if the V and A characters overlap slightly.
37 const char* svg = "<svg viewBox=\"0 0 150 40\" xmlns=\"http://www.w3.org/2000/svg\">"
38 "<style>"
39 "text {"
40 "font: 13px sans-serif;"
41 "}"
42 "</style>"
43 "<text x=\"10\" y=\"30\">VAVAVAVA</text>"
44 "</svg>";
45
main(int argc,char ** argv)46 int main(int argc, char** argv) {
47 if (argc != 2) {
48 printf("Usage: %s <name.png>", argv[0]);
49 return 1;
50 }
51 SkFILEWStream output(argv[1]);
52 if (!output.isValid()) {
53 printf("Cannot open output file %s\n", argv[1]);
54 return 1;
55 }
56
57 // If necessary, clients should use a font manager that would load fonts from the system.
58 sk_sp<SkFontMgr> fontMgr;
59 #if defined(SK_FONTMGR_FONTCONFIG_AVAILABLE) && defined(SK_TYPEFACE_FACTORY_FREETYPE)
60 fontMgr = SkFontMgr_New_FontConfig(nullptr, SkFontScanner_Make_FreeType());
61 #elif defined(SK_FONTMGR_CORETEXT_AVAILABLE)
62 fontMgr = SkFontMgr_New_CoreText(nullptr);
63 #endif
64 if (!fontMgr) {
65 printf("No Font Manager configured\n");
66 return 1;
67 }
68
69 SkMemoryStream svgStream(svg, std::strlen(svg));
70
71 auto svg_dom = SkSVGDOM::Builder()
72 .setFontManager(fontMgr)
73 .setTextShapingFactory(SkShapers::BestAvailable())
74 .make(svgStream);
75
76 if (!svg_dom) {
77 printf("Could not parse compiled-in svg\n");
78 return 1;
79 }
80
81 auto surface = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(kWidth, kHeight));
82
83 svg_dom->setContainerSize(SkSize::Make(kWidth, kHeight));
84 svg_dom->render(surface->getCanvas());
85
86 SkPixmap pixmap;
87 surface->peekPixels(&pixmap);
88
89 if (!SkPngEncoder::Encode(&output, pixmap, {})) {
90 printf("PNG encoding failed.\n");
91 return 1;
92 }
93 printf("Success!\n");
94 return 0;
95 }
96